georgec thanks for coming to my aid with daveopam, but I must admit we do fly together and he's an alright guy. FallingWithStyle I was using a 15 X 4W to break in my satio 100 but since I have changed to a 16 X 4W but I still think I am underpowered[sm=frown.gif] I shouldn't have been so tight and went with a YS110. Since I have posted this thread I have gotten a OS-F and changed all of my fuel lines, but I have yet to try it. I let all of you know how it turns out. And daveopam just you wait till..till...O heck I'll get you for this one[sm=punching.gif]!!!!!!!!